<?php

/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage Gdata
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Query.php 16971 2009-07-22 18:05:45Z mikaelkael $
 */

/**
 * Zend_Gdata_App_Util
 */
require_once 'Zend/Gdata/App/Util.php';

/**
 * Provides a mechanism to build a query URL for Gdata services.
 * Queries are not defined for APP, but are provided by Gdata services
 * as an extension.
 *
 * @category   Zend
 * @package    Zend_Gdata
 * @subpackage Gdata
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Gdata_Query
{

	/**
	 * Query parameters.
	 *
	 * @var array
	 */
	protected $_params = array();

	/**
	 * Default URL
	 *
	 * @var string
	 */
	protected $_defaultFeedUri = null;

	/**
	 * Base URL
	 * TODO: Add setters and getters
	 *
	 * @var string
	 */
	protected $_url = null;

	/**
	 * Category for the query
	 *
	 * @var string
	 */
	protected $_category = null;

	/**
	 * Create Gdata_Query object
	 */
	public function __construct($url = null)
	{
		$this->_url = $url;
	}

	/**
	 * @return string querystring
	 */
	public function getQueryString()
	{
		$queryArray = array();
		foreach ($this->_params as $name => $value) {
			if (substr($name, 0, 1) == '_') {
				continue;
			}
			$queryArray[] = urlencode($name) . '=' . urlencode($value);
		}
		if (count($queryArray) > 0) {
			return '?' . implode('&', $queryArray);
		} else {
			return '';
		}
	}

	/**
	 *
	 */
	public function resetParameters()
	{
		$this->_params = array();
	}

	/**
	 * @return string url
	 */
	public function getQueryUrl()
	{
		if ($this->_url == null) {
			$url = $this->_defaultFeedUri;
		} else {
			$url = $this->_url;
		}
		if ($this->getCategory() !== null) {
			$url .= '/-/' . $this->getCategory();
		}
		$url .= $this->getQueryString();
		return $url;
	}

	/**
	 * @param string $name
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setParam($name, $value)
	{
		$this->_params[$name] = $value;
		return $this;
	}

	/**
	 * @param string $name
	 */
	public function getParam($name)
	{
		return $this->_params[$name];
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setAlt($value)
	{
		if ($value != null) {
			$this->_params['alt'] = $value;
		} else {
			unset($this->_params['alt']);
		}
		return $this;
	}

	/**
	 * @param int $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setMaxResults($value)
	{
		if ($value != null) {
			$this->_params['max-results'] = $value;
		} else {
			unset($this->_params['max-results']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setQuery($value)
	{
		if ($value != null) {
			$this->_params['q'] = $value;
		} else {
			unset($this->_params['q']);
		}
		return $this;
	}

	/**
	 * @param int $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setStartIndex($value)
	{
		if ($value != null) {
			$this->_params['start-index'] = $value;
		} else {
			unset($this->_params['start-index']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setUpdatedMax($value)
	{
		if ($value != null) {
			$this->_params['updated-max'] = Zend_Gdata_App_Util::formatTimestamp($value);
		} else {
			unset($this->_params['updated-max']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setUpdatedMin($value)
	{
		if ($value != null) {
			$this->_params['updated-min'] = Zend_Gdata_App_Util::formatTimestamp($value);
		} else {
			unset($this->_params['updated-min']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setPublishedMax($value)
	{
		if ($value !== null) {
			$this->_params['published-max'] = Zend_Gdata_App_Util::formatTimestamp($value);
		} else {
			unset($this->_params['published-max']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setPublishedMin($value)
	{
		if ($value != null) {
			$this->_params['published-min'] = Zend_Gdata_App_Util::formatTimestamp($value);
		} else {
			unset($this->_params['published-min']);
		}
		return $this;
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setAuthor($value)
	{
		if ($value != null) {
			$this->_params['author'] = $value;
		} else {
			unset($this->_params['author']);
		}
		return $this;
	}

	/**
	 * @return string rss or atom
	 */
	public function getAlt()
	{
		if (array_key_exists('alt', $this->_params)) {
			return $this->_params['alt'];
		} else {
			return null;
		}
	}

	/**
	 * @return int maxResults
	 */
	public function getMaxResults()
	{
		if (array_key_exists('max-results', $this->_params)) {
			return intval($this->_params['max-results']);
		} else {
			return null;
		}
	}

	/**
	 * @return string query
	 */
	public function getQuery()
	{
		if (array_key_exists('q', $this->_params)) {
			return $this->_params['q'];
		} else {
			return null;
		}
	}

	/**
	 * @return int startIndex
	 */
	public function getStartIndex()
	{
		if (array_key_exists('start-index', $this->_params)) {
			return intval($this->_params['start-index']);
		} else {
			return null;
		}
	}

	/**
	 * @return string updatedMax
	 */
	public function getUpdatedMax()
	{
		if (array_key_exists('updated-max', $this->_params)) {
			return $this->_params['updated-max'];
		} else {
			return null;
		}
	}

	/**
	 * @return string updatedMin
	 */
	public function getUpdatedMin()
	{
		if (array_key_exists('updated-min', $this->_params)) {
			return $this->_params['updated-min'];
		} else {
			return null;
		}
	}

	/**
	 * @return string publishedMax
	 */
	public function getPublishedMax()
	{
		if (array_key_exists('published-max', $this->_params)) {
			return $this->_params['published-max'];
		} else {
			return null;
		}
	}

	/**
	 * @return string publishedMin
	 */
	public function getPublishedMin()
	{
		if (array_key_exists('published-min', $this->_params)) {
			return $this->_params['published-min'];
		} else {
			return null;
		}
	}

	/**
	 * @return string author
	 */
	public function getAuthor()
	{
		if (array_key_exists('author', $this->_params)) {
			return $this->_params['author'];
		} else {
			return null;
		}
	}

	/**
	 * @param string $value
	 * @return Zend_Gdata_Query Provides a fluent interface
	 */
	public function setCategory($value)
	{
		$this->_category = $value;
		return $this;
	}

	/*
	 * @return string id
	 */
	public function getCategory()
	{
		return $this->_category;
	}


	public function __get($name)
	{
		$method = 'get'.ucfirst($name);
		if (method_exists($this, $method)) {
			return call_user_func(array(&$this, $method));
		} else {
			require_once 'Zend/Gdata/App/Exception.php';
			throw new Zend_Gdata_App_Exception('Property ' . $name . '  does not exist');
		}
	}

	public function __set($name, $val)
	{
		$method = 'set'.ucfirst($name);
		if (method_exists($this, $method)) {
			return call_user_func(array(&$this, $method), $val);
		} else {
			require_once 'Zend/Gdata/App/Exception.php';
			throw new Zend_Gdata_App_Exception('Property ' . $name . '  does not exist');
		}
	}

}
